期刊论文

Three-dimensional Surface Reconstruction of Spiral CT for Teeth and Clinical Use in Examining Impacted Teeth of Jaws

Chen, S.

中文

华西口腔医学杂志

Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology

1000-1182

2000

18

4

247-249

10.3321/j.issn:1000-1182.2000.04.012

广东省科委研究基金!资助项目 (编号 970 16 )；

本校为其他机构

目的 :建立牙齿立体表面形态图像并探讨用于术前检查骨内埋伏牙的效果。方法 :应用三维螺旋CT的图像处理功能 ,在牙颌骨表面重建图像的基础上 ,采用图像处理表面遮盖法 ,消除周围骨组织的影像 ,获得单纯牙体表面图像。应用该方法检查 9例患者的骨内埋伏多生牙和阻生牙。结果 :能清楚显示上颌骨埋伏多生牙的畸形形态、在牙列唇侧或腭侧的位置及与牙列牙根的关系 ;上颌埋伏恒尖牙萌出方向及与正畸牵引方向的角度 ;阻生智齿与第二磨牙的距离并据此预测拔除阻生齿时可能形成的阻力方位。结论 :牙体表面成像是一种能展示牙齿立体表面形态影像的新技术 ,可作为骨内埋伏牙外科处理和正畸治疗前的检查手...

Objective: To establish a new technique for three dimensional surface reconstruction of teeth (dental surface reconstruction), and apply it to investigate impacted teeth in bone before operation. Methods: On the basis of three dimensional surface reconstruction of teeth and jaws, the dental surface reconstruction is obtained with the technique of shaded surface display (SSD), making transparent bone around. This technique is applied to investigate 9 cases of supernumerary and impacted teeth. Results: Dental surface reconstruction image can present the dental surface image including crown, root...